Home / 280,239.45-386,739.78-152,922.03

Finding the Fourth Proportional to 280,239.45, 386,739.78 and 152,922.03

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Solution

The fourth proportional to 280,239.45, 386,739.78 and 152,922.03 is: 211,037.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    280,239.45 : 386,739.78 = 152,922.03 : x
  2. Step 2: Convert to fraction form
    280,239.45/386,739.78 = 152,922.03/x
  3. Step 3: Cross multiply
    280,239.45x = 386,739.78 × 152,922.03
  4. Step 4: Simplify right side
    280,239.45x = 59,141,031,474.74
  5. Step 5: Solve for x
    x = 59,141,031,474.74/280,239.45
  6. Step 6: Final answer
    x = 211,037.49

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.